build

EXPERIMENT: build jujutsu with buck2 #14852

Job	Run time
Build jj-lib without Git support	45s
build (ubuntu-latest)	4m 42s
build (macos-13)	9m 23s
build (macos-14)	3m 45s
Check protos	34s
build (windows-latest)	10m 1s
Check that MkDocs can build the docs	19s
build (ubuntu-latest, --all-features)	5m 39s
Check that MkDocs can build the docs with Poetry 1.8	21s
Check formatting	18s
cargo-deny (advisories)	23s
Clippy check	2m 33s
cargo-deny (bans licenses sources)	34s
	39m 17s

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